1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd3f9a24337aa24370ca284594dcdf6797993db6e3e517862616e5c23f53341. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57d547c1-62d4-46fc-80a8-7a6bf0934ebe.json and https://artists.proofprofile.net/proofs/artist/57d547c1-62d4-46fc-80a8-7a6bf0934ebe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Let’s Face the Music and Dance (Foxtrot)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56ff96edf08c50a2cb8be12fbf2104e302944807466b118037e76e5b520474c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf9f9bde432eb40d86cb17cad95e11e9bb31e0faceaf4d64f34297c3a46b6cd. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c90b8928004f7c8ee3c5b09aa345ed54c2e99f2baba64275f1a10432425936b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e17e1848c1b3a59d71b63867a8826552fc7e2f9dfcddc6d45e849f8c79683bb. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700022.
Get Me to the Church on Time (Quickstep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb44ada5dfa276744bbd2105cc06a4baae53d4994f38175b94cc0afb2fc6f72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326e5a13d3511f59fd0e2d0c9b7b2e966e636e422c8068463804e6cd491ca986. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4827dfc0b8f9ebff54c078adf48e6cd4f0b86d66e95be0d5f21236b0635449d3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c8adca2779fce9ff04c595e84b06997e6da85305f2b1c89b98ec9a6c335788. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc7924ef2d61e0451a1d5f57fb6b4f2384da9d10c0f01e4bd744bebc9fe1b56. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6eb0c394114f0e519fe5a9abf9c09e023bd402f662aea5b604645a1f01f9fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aacfe05e4297dc426a5b26145a15b0551f6b659bad0cebae4a3c41ec1b9b089. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeccaa03496fa75bd1c8000f1039f30beefb4e5a03eaf5232fa1dd3406a2d6e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206b08cd68e40c0b846496422538703e5a3588844c3611a9cfc31add6232086f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a153d357b7e81559ce61dd5a061f8d8223d28ed159b0a0a6488b198fb5012fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e338ec0a3910c7745403fdac8ed9592d97c7c1fe2218b77e5f8e95a4f319ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6713aab3a3dac5464274ea9539fd15baa89bf40fdc10767e65c8e461492dc023. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf666c12a9e2346a72c1aa07ebb398e2bba4cf67a5224dc3a6d46d928091fd. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0fd3a93e560c2daf168baa54b582077b4f9c0d6e8c80d3058162086c89764. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2393b312088376be56ae0ef9f240e7122f719b3c25e6158253d26c17038469. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcece960d7ebd238b98e347d0d2598d9b288a812044c416a4b45cdf371ea75b8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d23297c8da13fa843dd1586fc90b19b947a62405a9e5a9615a747e9fc0ef5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638af2fb0a9b41e5b55b589b976aec2241663429e1eb21bf67f616ba86fb8a52. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d33be5916752dbb1d79c8f6c0e5079802b1ac367ff30b9c58147e4bd7cf33a5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd0c423b31756bf871a1ea76c4cea2c559722b92c973456fd614e140dd7b32d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f446017939bb5d9d495763080a10fb9b66e62abde1a0709cb1f1edb5a2eb57a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf5c901fe6581cc66c05c6f0bdfedf1e61d37f8f0a155489aea9036265f6f5f. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1400011.
What Is This Thing Called Love? (Live) [feat. Eleanor Keenan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ed477db3c9e52d90a142ebb3d5f236d5e82cb77e8499e69e217173338c830. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK5BH1400012.